The Alamy photographer who uploads the 20 millionth picture will be rewarded with 100% royalties for 20 of their images over the subsequent 20 months.

Expanding on the “20” theme, there will also be 20 runner up prizes for those who email or tweet with the closest prediction of the time and date that the 20 millionth image hits the site. Each of the lucky winners will take all the royalties on one of their images for 20 weeks.

Alan Capel, Alamy’s Head of Content says “We’ve always taken great pride in passing the largest share of the sale back to the photographer. What better way to celebrate the ground breaking milestone of 20 million images than to increase the royalty to the max for a group of lucky contributors”.